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Battery Charging - LG KP320 Service Manual

Triple band gsm digital cellular telephone
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5-2-9 BATTERY CHARGING

Battery management, which controls charge and discharge of the battery is
the most important function for safety. 7338 SW performs charging algorithm. To
regulator the power PMOS for set the charging current.
KP320 CHARGING CIRCUIT AND ALGORITHM
charging Circuit and Algorithm
7610 Charging circuit:
The schematic below shows the external charging components used in the Arima
7610 project. All ports are directly connected to the corresponding pins of PMU IC
(6318). VCHG is the V charger supply rail coming directly from the wall-plug constant
voltage charger via the system connector, and VBAT is the Battery Voltage rail,
connected directly to the battery pack terminal connector. The system uses a solid
ground plane, and both the Battery Pack terminal and the wall-plug charger return
paths are connected directly to ground.
KP320 SERVICE MANUAL V1.2
61

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